java.util.jar
Class JarFile

The JarFile class is used to read the contents of a jar file
from any file that can be opened with java.io.RandomAccessFile.
It extends the class java.util.zip.ZipFile with support
for reading an optional Manifest entry. The
Manifest can be used to specify meta-information about the
jar file and its entries.

Unless otherwise noted, passing a null argument to a constructor
or method in this class will cause a NullPointerException to be
thrown.